MAX8607：1MHz PWM Boost Converter for 1.5A White LED Camera Flash

Highest Current, White LED, Step-Up DC-DC for the Brightest Camera Flash Delivers 1.5A Regulated Current with Up to 84% Efficiency

The MAX8607 white LED boost converter is optimized for camera flash/strobe applications using high-current white LEDs. The MAX8607 integrates a 1MHz PWM boost converter, 1.5A low-dropout (LDO) current regulator, and logic control circuitry for a space-saving LED flash design. Two logic inputs control four modes of operation: shutdown mode reduces the quiescent current to 0.1µA (typ), movie mode supplies up to 360mA of LED current for continuous lighting, flash mode supplies up to 1.5A of LED current for short-duration lighting during an exposure, and disco mode supplies +5V (at up to 1A) to external circuits while driving the LED with a fixed 80mA current. The internal 1MHz boost converter features an adaptive control scheme with an internal switching MOSFET and synchronous rectifier to improve efficiency and minimize external component count. The MAX8607 is available in a 14-pin, 3mm x 3mm TDFN package (0.8mm max height).

Key Features

Supports Lumileds and Other High-Power White LEDs
Independently Set Flash/Movie Currents
- Flash-Mode Current Up to 1.5A
- Movie-Mode Current Up to 360mA
Disco Mode with Fixed 5V (Up to 1A) and 80mA LED Current
84% Efficiency (PLED / PBATT) at 1.1A
TA Derating Function for LED Thermal Protection
Output Overvoltage Protection (OVP)
Soft-Start Eliminates Inrush Current
1MHz PWM Operation at All Loads
Small External Components
2.7V to 5.5V Input Voltage Range
0.1µA Shutdown Mode
14-Pin, 3mm x 3mm TDFN Package

MAX8607: Typical Operating Circuit

Applications/Uses

Camera Flashes/Strobes
Cell Phones/Smartphones
PDAs and Digital Cameras

DataSheet

title	Download file
MAX8607 Data Sheet	MAX8607.pdf

Parametrics

Part Number	Battery Input	Regulation Topology	Max. No. of LEDs	LED Channels	LED Configuration	I_LED per Channel (A)	Dimming Control	P_OUT (W)	V_IN (V)	V_IN (V)	I_CC (mA)	LED String Volt. (V)	Oper. Freq. (kHz)	Package/Pins	Budgetary Price
Part Number	Battery Input	Regulation Topology	Max. No. of LEDs	LED Channels	LED Configuration	max	Dimming Control	P_OUT (W)	min	max	max	max	Oper. Freq. (kHz)	Package/Pins	See Notes
MAX8607	1-Cell Li+	Inductor Based Linear	1	1	Parallel	1.5	Digital	6	2.7	5.5	4	5.5	1000	TDFN-EP/14	$2.04 @1k

Design kits & evaluation modules

MAX8607EVKIT

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX8607ETD+	Active		TDFN-EP,;14 pin;9.6 mm²	-40°C to +85°C	Lead Free
MAX8607ETD+T	Active		TDFN-EP,;14 pin;9.6 mm²	-40°C to +85°C	Lead Free
MAX8607ETD-T	No Longer Available	MAX8607ETD+T	TDFN-EP,;14 pin;9.6 mm²	-40°C to +85°C	No

MAX8607.pdf MAX8607

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MAX8607.pdf MAX8607